Still Confused?

Try reviewing these fundamentals first

Still Confused?

Try reviewing these fundamentals first

Nope, got it.

That's the last lesson

Start now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started Now- Intro Lesson: a2:03
- Intro Lesson: b4:04
- Intro Lesson: c8:31
- Intro Lesson: d7:14
- Intro Lesson: e7:45
- Lesson: 1a1:36
- Lesson: 1b1:32
- Lesson: 1c1:20
- Lesson: 2a2:05
- Lesson: 2b2:07
- Lesson: 2c1:58
- Lesson: 3a2:29
- Lesson: 3b2:23
- Lesson: 3c2:34
- Lesson: 4a4:30
- Lesson: 4b4:02
- Lesson: 5a3:37
- Lesson: 5b4:26

In this lesson, we will learn:

- How to write calendar dates in written form (words, ordinals, and numbers)
- How to write calendar dates in metric notation (numbers only, in the format: yyyy/mm/dd)
- Writing calendar dates using numbers in a variety of formats (mm/dd/yyyy OR mm/dd/yy OR dd/mm/yy)

**Calendars**and**dates**keep track of time! A date is a reference to a specific day in time, and we can tell how much time passes between two dates.- Calendar dates use the units of time for:
**month**,**day**, and**year**

- The written form of a calendar date is in the format:
**[month] [day]**^{ordinal}, [year] - Ex. December 25
^{th}, 2020

- The
**metric notation**of a calendar date is in the order:**year / month / date** - i.e. yyyy / mm / dd (sometimes it is seen with dashes or spaces instead)
- this orders the time units from longest to shortest durations
- Ex. 2020 / 12 / 25 is December 25
^{th}, 2020

- *A special exception is that February has 29 days (instead of 28 days) during a
**leap year**(every 4 years).

- Dates in
**metric notation**are used often when filling in paperwork! - There are other formats of writing out the date using numbers:
- mm/dd/yyyy (different order)
- mm/dd/yy (only the last 2 digits of the year)
- dd/mm/yy (different order)

- IntroductionIntroduction to Calendar Dates:a)What are calendar dates?b)Written form of datesc)Metric notation of datesd)Explaining leap years (and the number of days in each month)e)Other number formats/notations for dates
- 1.
**Writing calendar dates in metric notation**

Write the date in metric notationa)June 29^{th}, 1910b)March 1^{st}, 2004c)October 16^{th}, 2012 - 2.
**Writing metric notation dates in written (standard) form**

Write the metric notation date in written form, using words and numbersa)1970 12 02b)2119 09 15c)2028 01 23 - 3.
**Writing calendar dates in different number notations**

Write the calendar date shown in different notation formats:a)- $\overline{Y}$ $\overline{Y}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$
- $\overline{D}$ $\overline{D}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{Y}$ $\overline{Y}$
- $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$ $\;$ $\overline{Y}$ $\overline{Y}$

b)- $\overline{Y}$ $\overline{Y}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$
- $\overline{D}$ $\overline{D}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{Y}$ $\overline{Y}$
- $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$ $\;$ $\overline{Y}$ $\overline{Y}$

c)- $\overline{Y}$ $\overline{Y}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$
- $\overline{D}$ $\overline{D}$ $\;$ $\overline{M}$ $\overline{M}$ $\;$ $\overline{Y}$ $\overline{Y}$
- $\overline{M}$ $\overline{M}$ $\;$ $\overline{D}$ $\overline{D}$ $\;$ $\overline{Y}$ $\overline{Y}$

- 4.
**Calendar Dates - Word Problem 1**

Writing dates can be confusing!

Angie wrote her birth date on paper: 11 25 98a)Can these numbers represent more than one date?

Write all possibilities for her birthday in written form.b)Angie's sister Mina was born 3 years, one month, and 5 days later.

Write Mina's birthday in written form and in metric notation. - 5.
**Calendar Dates - Word Problem 2**

Writing dates can be confusing!

Toby wrote his birth date on paper: 01 07 13a)Can these numbers represent more than one date?

Write all possibilities for his birthday in written form.b)Toby wrote his birth date on paper: 01 07 13

If Toby told you that he was born during the summer of 2013, what is his birthday in metric notation?